Better Python syntax highlighting

init.vim

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+" This file follows the tutorial at https://jdhao.github.io/2018/12/24/centos_nvim_install_use_guide_en/
+" [TODO] https://www.reddit.com/r/neovim/comments/mu976j/new_dark_neovim_theme_tokyonight_written_in_lua/
+
+" Set python interpereter to use virtualenvs
+" The env variable is something like /foo/bar/bin/python
+if !empty($CONDANVIM)
+  let g:python3_host_prog= $CONDANVIM
+endif
+
+call plug#begin('~/.local/share/nvim/plugged')
+
+Plug 'davidhalter/jedi-vim'
+Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
+Plug 'zchee/deoplete-jedi'
+Plug 'vim-airline/vim-airline'
+Plug 'vim-airline/vim-airline-themes'
+Plug 'jiangmiao/auto-pairs'
+Plug 'scrooloose/nerdcommenter'
+Plug 'davidhalter/jedi-vim'
+Plug 'machakann/vim-highlightedyank'
+Plug 'morhetz/gruvbox'
+Plug 'sickill/vim-monokai'
+Plug 'mhinz/vim-signify'
+Plug 'tpope/vim-fugitive'
+Plug 'plasticboy/vim-markdown', { 'for': 'markdown' }
+Plug 'scrooloose/nerdtree'
+Plug 'sheerun/vim-polyglot'
+
+call plug#end()
+
+let g:deoplete#enable_at_startup = 1
+autocmd InsertLeave,CompleteDone * if pumvisible() == 0 | pclose | endif
+inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"
+
+"let g:airline_theme='powerlineish'
+let g:airline_theme='jellybeans'
+let g:airline#extensions#hunks#non_zero_only = 1
+let g:airline#extensions#tabline#enabled = 1
+let g:airline#extensions#tabline#fnamemod = ':t'
+let g:airline#extensions#tabline#formatter = 'unique_tail_improved'
+" Show buffer number for easier switching between buffer,
+" see https://github.com/vim-airline/vim-airline/issues/1149
+let g:airline#extensions#tabline#buffer_nr_show = 1
+" Buffer number display format
+let g:airline#extensions#tabline#buffer_nr_format = '%s. '
+let g:airline_powerline_fonts = 1
+
+" disable autocompletion, because we use deoplete for completion
+let g:jedi#completions_enabled = 0
+" open the go-to function in split, not another buffer
+let g:jedi#use_splits_not_buffers = "right"
+
+"let g:gruvbox_contrast_dark = "hard"
+"colorscheme gruvbox
+"set background=dark
+colorscheme monokai
+
+" The VCS to use
+let g:signify_vcs_list = [ 'git' ]
+" Change the sign for certain operations
+let g:signify_sign_change = '~'
+nnoremap <silent> <leader>gc :Git commit<CR>
+nnoremap <silent> <leader>gs :Git<CR>
+nnoremap <silent> <leader>gw :Gwrite<CR>
+nnoremap <silent> <leader>gpl :Git pull<CR>
+" Note that to use bar literally, we need backslash it, see also `:h :bar`.
+nnoremap <silent> <leader>gpu :15split \| term git push
+
+set noswapfile
+
+set number  " Show line number and relative line number
+
+" Character to show before the lines that have been soft-wrapped
+set showbreak=↪
+
+" General tab settings
+set tabstop=4       " number of visual spaces per TAB
+set softtabstop=4   " number of spaces in tab when editing
+set shiftwidth=4    " number of spaces to use for autoindent
+set expandtab       " expand tab to spaces so that tabs are spaces
+
+" Use mouse to select and resize windows, etc.
+set mouse=nic  " Enable mouse in several mode
+set mousemodel=popup  " Set the behaviour of mouse
+
+" Do not show mode on command line since vim-airline can show it
+set noshowmode
+
+" Ask for confirmation when handling unsaved or read-only files
+set confirm
+
+set visualbell noerrorbells  " Do not use visual and errorbells
+set history=500  " The number of command and search history to keep
+
+set nofoldenable
+
+" Some keybindings
+" <leader>cc comment out single line
+" <leader>cu uncomment a line
+" <leader>d: go to definition
+" K: check documentation of class or method
+" <leader>n: show the usage of a name in current file
+" <leader>r: rename a name
+" C-ww: Change the window